Heat Advisory — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO 8:00 PM

Alexander County, Illinois, United States

Last updated: 8:05 AM CDT  ·  Refresh
25°C
Feels like 28°
Mostly Clear
▲ 34°  /  ▼ 23°
Wind
7 mph SSW
Humidity
83%
Dew Point
23°
Pressure
29.63 inHg
Visibility
9 mi
UV Index
5.1
Cloud Cover
28%
Sunrise
6:09 AM
Sunset
7:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Alexander County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3304 J/kg) — isolated convective development possible. Sunrise: 6:09AM · Sunset: 7:55PM.

Alerts

Heat Advisory
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO
Expires 8:00 PM
40 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
8%
9 AM
26°
3%
10 AM
28°
3%
11 AM
29°
3%
12 PM
31°
3%
1 PM
33°
3%
2 PM
33°
3%
3 PM
33°
3%
4 PM
33°
3%
5 PM
34°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
27°
3%
12 AM
26°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
24°
5%
5 AM
24°
5%
6 AM
24°
5%
7 AM
24°
5%
7-Day Forecast
Today
34° 23°
Partly Cloudy.
Tue
36° 24°
Clear.
Wed
38° 24°
Partly Cloudy.
Thu
37° 24°
Clear with a 39% chance of rain.
Fri
35° 24°
Clear with a 38% chance of rain.
Sat
38° 23°
Clear.
Sun
39° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 8% 7 mph SSW 83%
9 AM 26° Partly Cloudy 3% 9 mph SW 75%
10 AM 28° Partly Cloudy 3% 10 mph SW 70%
11 AM 29° Mostly Clear 3% 11 mph SW 65%
12 PM 31° Partly Cloudy 3% 11 mph SW 60%
1 PM 33° Partly Cloudy 3% 11 mph SW 55%
2 PM 33° Partly Cloudy 3% 11 mph SW 54%
3 PM 33° Partly Cloudy 3% 11 mph SSW 52%
4 PM 33° Partly Cloudy 3% 12 mph SSW 52%
5 PM 34° Partly Cloudy 3% 10 mph SSW 56%
6 PM 33° Partly Cloudy 3% 9 mph SSW 62%
7 PM 32° Partly Cloudy 3% 8 mph SSW 67%
8 PM 31° Partly Cloudy 3% 7 mph SSW 70%
9 PM 28° Partly Cloudy 3% 7 mph SSW 71%
10 PM 27° Mostly Clear 3% 7 mph SSW 73%
11 PM 27° Mostly Clear 3% 7 mph SSW 76%
12 AM 26° Mostly Clear 3% 7 mph SSW 78%
1 AM 26° Partly Cloudy 3% 8 mph SSW 80%
2 AM 26° Partly Cloudy 3% 8 mph SSW 81%
3 AM 25° Partly Cloudy 3% 8 mph SSW 82%
4 AM 24° Partly Cloudy 5% 7 mph SSW 84%
5 AM 24° Mostly Clear 5% 8 mph SSW 84%
6 AM 24° Mostly Clear 5% 8 mph SSW 85%
7 AM 24° Clear 5% 8 mph SSW 86%
15-Day Forecast
Today
8/10
Partly Cloudy
8%
23°
34°
Tue
8/11
Clear
6%
24°
36°
Wed
8/12
Partly Cloudy
19%
24°
38°
Thu
8/13
Clear
39%
24°
37°
Fri
8/14
Clear
38%
24°
35°
Sat
8/15
Clear
15%
23°
38°
Sun
8/16
Clear
18%
25°
39°
Mon
8/17
Drizzle
47%
23°
35°
Tue
8/18
Partly Cloudy
47%
21°
35°
Wed
8/19
Mostly Clear
44%
22°
34°
Thu
8/20
Drizzle
60%
23°
36°
Fri
8/21
Drizzle
60%
22°
35°
Sat
8/22
Drizzle
60%
22°
35°
Sun
8/23
Clear
60%
22°
36°
Mon
8/24
Clear
60%
21°
34°
40
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
40 AQI 7.2 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 40 Good 38 40
Wed 35 Good 35 18
Thu 32 Good 32 28
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Aug 10, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1711 J/kg
MLCAPE1521 J/kg
MUCAPE1857 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.9
Kinematics
0–6 km Shear7 kt
0–1 km Shear18 kt
Eff. Shear5 kt
0–1 km SRH80
0–3 km SRH99
Eff. SRH99
Storm Motion77° @ 7 kt
0–1 km EHI0.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.4
Thermo & Levels
PWAT1.60 in
0–3 km LR4.1 °C/km
700–500 LR8.0 °C/km
Total Totals52.3
LCL970 hPa
LFC1003 hPa
EL190 hPa
Freezing Lvl14,734 ft